Answer:
5
Step-by-step explanation:
4x = 20
x = 20/4
x = 5
hope you get it...
5 times 5 times 5 times 5 is 20
So just count by 5
Hope this help
Answer:
300.57 m
Step-by-step explanation:
Answer:B
Step-by-step explanation:
First, determine the z-score of 675.
z = (675 - 500) / 100 = 1.75
The z-score of 500 is,
z = 0.
Subtracting the z-scores will give us 1.75. This is equal to 0.9599.
= 0.9599 - 0.5 = 0.4599
Multiplying this to the given number of light bulbs,
n = 0.4599 x 5000 = 2299.5
Therefore, there is approximately 2300 light bulbs expected to last between 500 to 675 hours.
